Histograms , superimposed with fitted probability density curves
PROC CAPABILITY is a component of SAS/QC (Quality Control). The
features described below are now available in PROC UNIVARIATE (part of base SAS).
# Histograms and comparative histograms. Optionally, these can be
superimposed with fitted probability density curves for various
distributions and kernel density estimates.
# Cumulative distribution function plots (cdf plots). Optionally,
these can be superimposed with specification limits and probability
distribution curves for various distributions.
# Quantile-quantile plots (Q-Q plots), probability plots, and
probability-probability plots (P-P plots). These plots facilitate the
comparison of a data distribution with various theoretical
distributions.
# Goodness-of-fit tests for a variety of distributions including the
normal.
# Statistical intervals (prediction, tolerance, and confidence
intervals) for a normal population.
# The ability to inset summary statistics and capability indices in
plots produced on a graphics device.